const http=require('http')
const server=http.createServer()
server.on('request',(req,res)=>{
    const url=req.url
    let content='<h1>404 NOT FOUND!</h1>'
    if(url=='/'||url=='/index.html'){
        content='<h1>首页</h1>'
    }else if(url=='/about.html'){
        content='<h1>关于</h1>'
    }
    res.setHeader('Content-Type','text/html;charset=utf-8')
    res.end(content)
})
server.listen('8080',()=>{
    console.log('服务器运行在:http://localhost:8080',)
})